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| Patents for Milton J. Steffes | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,418,734 | Apr. 08, 1947 | M.J. Steffes | Tool Holder | lathe tool holders and tool posts | |
| 2,919,902 | Jan. 05, 1960 | M.J. Steffes | Masonry drill | ||
| 2,969,122 | Jan. 24, 1961 | M.J. Steffes | Masonry drill | ||